MODES_SNM - MOdular DEtection System for Special Nuclear Materials

The MODES_SNM project aims to carry out
technical research in order to develop a prototype for a mobile, modular
detection system for radioactive and Special Nuclear Materials (SNM). To
maximize the detection capability for SNM the project will develop new
detectors for fast and thermal neutrons, as well as gamma-rays, based on
the technology of high pressure scintillation cells using noble gases (as
4He and Xe) recently developed by ARKTIS.
The proof-of-principle of the new detectors has already been recently
demonstrated.

The goal of the project is to deliver a
tested prototype of a modular mobile system capable of passively detecting
weak or shielded radioactive sources with accuracy higher than that of
currently available systems. The identification of the gamma-ray emitter
is also possible by using the spectroscopic analysis performed by high
pressure Xe cells whereas the ratio between fast and thermal neutrons will
bring information about the eventual shielding around the source.

The R&D aims at improve the current
detectors (i.e. at designing, constructing and testing robust, safe, and
lightweight high pressure cells with an advanced read-out system) so that
they can be used as basic components of the modular mobile system. A
suitable Information System will be also developed to manage the
detectors, integrate and analyze the data, and provide to the user simple
information derived by a decision tree utilizing the data from the three
types of detectors. The prototype detection system is the major
deliverable of the project. The project also includes the qualification of
this detection system in laboratory condition to quantify its detection
performance and ultimate limits, as well as a demonstration phase in which
the detection system will be field-tested by the end-user group
established within the project.

The MODES_SNM consortium officially
took up work in January 2012. Its kickoff meeting was hosted by the
University of Padova, the program's coordinator. The consortium consists
of two SMEs, four universities, a national nuclear research centre and end
users in the form of a customs agency. A list of consortium members is
given below. The project is foreseen to be completed in 30 months, within
a budget of EUR 3.2 million, including public and private sector
contributions.